Maulen Sagatkhanovich Ashimbayev (Kazakh: Мәулен Сағатханұлы Әшімбаев, Mäulen Sağathanūly Äşımbaev, [mæɥˈlʲen sɑʁɑtˌχɑnʊˈɫɤ æʃɘmˈbɑjɪf], born 28 January 1971) is a Kazakh politician who is serving as a member and chairman of the Senate of Kazakhstan.

Born in Alma-Ata in 1971, Ashimbayev graduated from the Al-Farabi Kazakh National University with a degree in economics and was a professor in Political Economy.

From 2015 to 2016, he attended the Fletcher School of Law and Diplomacy of the Tufts University in Medford, Massachusetts, earning a master's degree in international relations.

From 1995 to 1999, he was a senior expert, sector manager, first deputy head of the Center for Analysis and Strategic Studies of the Presidential Administration of Kazakhstan.

He was reelected again in 2016 and served as the chairman of the Committee on Foreign Affairs, Defense and Security.